Rak811 not responding to AT commands

LPWAN Modules / EVBs RAK811
1

I bought a rak2245 kit with a gateway and a rak811 based Wisnode (v1.2 board) last month.

I tried flashing the rak811 node with a firmware found on github https://github.com/RAKWireless/RAK811_LoRaNode/tree/master/doc/AT%20Command

I used the STM Flash Loader to flash RAK811_HF_V2.0.3.4.bin with a USB cable via UART. The node does not respond on any at commands anymore, as it used to.

Any chance I can go back to the factory firmware or reflash it with a working firmware? Is there a way to verify if the node is problematic?

any help is greatly appreciated.

2

Hello! Could you please send a screenshot of the problem you encountered? I can’t see anything wrong with your question!

3

Perhaps you can refer to this document for actiondocument

4

Hi Nicholas,

Thank you, I flashed the firmware like in the document, there was no problem with it, it completes successfully.

The problem is that when I try to send AT commands (for example via UART Assist), there is no output. I checked the serial connection and it looks fine.

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image.png637×575 33 KB

It used to work, but not anymore. Should I use a different firmware, or do something else I forgot?

thank you!

5

It can be seen from your figure that the baud rate you selected is wrong. Please change the baudrate from 9600 to 115200.

6

It can be seen from your figure that the baud rate you selected is wrong. Please change the baudrate from 9600 to 115200.

1 Like
7

Thank you so much, I managed to fix it. I also flashed v2.0.3.4 firmware. I can interact with the device now.

I do have the same problem I initially had that prompted me to looking for newer firmware, but I will open a different topic as it is at a different level.

Thank you Nicholas!

8

You are welcome And thank you for your questions.